Abstract
For n 3 and sufficiently small a 0, the minimum value of the permanent function restricted on n × n doubly stochastic matrices with at least one entry equal to a is obtained. For n = 3, the explicit form of the function p is derived where p(a) = min{per(C):C = (cij )∊Ω3 c 11 = a}a∊ [0, 1].